Perhaps you should try some spelling variations:
changed won » changed john, changed world, changed what
yang yang » wang yang, wang yan
chang won » chang soon, chang ann, chang min
shang hai » shang kai, dang hai, chang ha
wan yang » wang yang, dan yang, tan yang
wang yue » wong yue, wang hua, wang yan
judy 19 » judy 1952, judy 1953, study 19

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: wan yang yang judy 19 ((changed won) OR (chang won)) ((shang hai) OR (wang yue)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yang yang judy 19 ((changed won) OR (chang won)) ((shang hai) or (wang yue)) ;~".
• Adding a wildcard symbol may retrieve word variants: wan yang yang judy 19 ((changed won) OR (chang won)) ((shang hai) or (wang yue)) ;*.